Göttingen Collection of Mathematical Models and Instruments

Case number 49

Hammered string (Piano string) Picked string (violin string) Hammered string (Piano string) Brunsviga sprocket wheel
2 Slide rules Calculating machine Curta I Suanpan (chinese abacus) Soroban from Tokyo,  Japan
Japanese calculating machine Russian abacus Calculating clock of Wichmann Aristo Slide rule model Studio
Stschoty from russia Slide rule Special slide rule Slide rule
Calculating machine Adix Graphical firing table Calculating machine Madas Model 12 E 2 Slide rules
Folding rule Small calculation machine Model of mechanical counters in number systems with the base 2, 4 and 10 Calculating machine Archimedes

The corresponding bottom case is: Case number U 49

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